peckham



(No Model. 4 SheetsSheet 1.

E. PEGKHAM.

OAR TRUCK.

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E. PEGKHAM.

UAR TRUCK. No. 604,784. Patented May 31,1898.

(No Model.) 4 SheetsSheet 3.

E. PEGKHAM.

GAR TRUCK Patented May 31,1898.

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EDGARPECKHAM, OF NEW YORK, N. Y.

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@PECIJFICATION forming part of Letters Patent No. 604 784, dated ma 31,1898. Application filed August ti, 1897- Berial No. 847,094. (No model.)

To all whom it may concern:

Be it known that I, EDGAR PECKHAM, a citizen of the United States, and aresident of New York, county and State of New York, have inventedcertain new and useful Improveinents in Car-Trucks, of which thefollowing is a specification.

This invention relates'to improvements in car-trucks particularlyintended for heavy elevated or suburban electric cars, It is also fadapted for cable and other street railways;

The truck relates to the class known as double trucks, employed forsupporting long car-bodies, the car-body being mounted upon apair of thetrucks, which are equipped with compound brake-lever appliances.

The object of the present improvementsis,

to provideaatruck particularly adapted for supporting h'eavy cars madeuse of in. highspeed service, and the parts are therefore heavilyconstructed. a My improvements comprise a certain novel construction ofthe side frames intended to afiord great strength to the truck andrender it capable of sustaining the weight of the carbody mounted upon acenter-bearing bolster; also novel means of supporting the.centerbearingswing-bolster on the truck also novel means or obtainingincreased traction on the driving-wheels of the truck, and also meansfor insuring an even application of the brakes when running through acurve.

My present improvements are illustrated in the accompanying drawings,which form part.

of this specification, and wherein like parts are indicated by likenumerals of reference in the several views, and wherein-' .Figure 1 isaplan view of the truck embody ing the invention. Fig. 2 is a sideelevation of the truck shown in Fig. 1. gitudinal sectional view on theline 3 3-of Fig. 1, certain parts being broken away. Fig. 4 is atransverse sectional viewon 'the line 4 4 of Fig. 1. Fig. 5 is a sideelevation of a truck, illustrating certain features hereinafterdescribed. Fig. 6 is a plan view of Fig. 5, and

Figs. 7 to 13 show detailspertaining to Figs.

5 and'6. Referring to the drawings,-1t will be seen that the side framescomprise the yokes or pedestals 14, upper longitudinal beams 15,

preferably duplex, as shown, and which sonof the yokes 14 upward I Thetruck has a short ster at the center bridge-truss giving to the sideframes the req- Fig. 3 is a lonnectthe yokes 14 together-near the centerof their vertical height, and lower longitudinal 1 same plane as beams15, and the under trussbean 1s 18 extending from the outer lower ends tothe end bcams'lil. wheel-base, and the side, frames;are;.; constructedto afiord great strength,- the'beams consisting of soft steelhot-riveted to soft-steel pedestals, into which jthe-upper' beams areinlaid before riveting. =Ti1e -jlower ;beam l'li'issecured by rivets inpoeketsjcast in the lower, sections of thepedestals. Between the lowerand upper beams -15 and "1610f each side frame is secured a bridge-truss'19,

riveted to said beams and braced against the lower sections of the ped-.estals. Theisideframes trussed as shown renders it possible, in a truckhaving longitudinal beams connecting. the pedestals t0- ge'ther, tolocate the carrbody-supporting bolof the wheel-base, the

uisite strength-to sustain the weight ofthe car-body with safety.

' Within the yokes 14 the journal-boxes 20 are arranged to operate inthe usual manner,- and above the tops of the journal-boxes are placedspiral springs 21, as shown in dotted lines Fig. 2, the said springsentering recesses in the top member .of the yokes 14 and serving tospring-cushion the truck on the journal-boxes, and thus assist inpreventing the pounding of the rail-joints. The axles of the truck areindicated at 22 and the wheels at 23.

At the longitudinal center of the truckframe there is located theswing-bolster 24, composed 'of two channel-bars set on edge and heldtogether by being riveted to the bearing-plates 25, the swivel' plate26, and the springsockets 27. The bolster 24 is carried upon thespring-plank 28, being supported thereon by a system of springscomprising i the half-elliptic spring 29 and the spiral nest-- springs30. The half-elliptic spring 29 has its ends loosely seated in pockets31 and is provided centrally with a strap 32, having'a concavedepression in its top, which receives a convex-bearing 33, attached atthe bottom of the swing bolster, thus providing a flexible,-

truck-frame in rigid alinement.

connection between the bolster and said spring. Spring-caps 27, toreceive the spiral nest-springs, are also provided on the springplank2S, and are preferably formed integral with the pockets 31 for the halfelliptic sprin Th; bolster of the car may be provided with sidebearing-plates adapted to rest on the bearing-plates of theswing-bolster 24: to admit of a limited rocking motion of the car,governed by the stillness of the spiral nestsprings 30, and thus addgreatly to the ease of riding, since it permits the wheels on one sideof the truck to rise independently of the car-body.

The spring-plank 28 is suspended by four links 34, two at each side ofthe truck, the links being carried by the two transverse bars ortransoms 35, which rest in pockets 36" in the side beams 15 of thetruck-frame. The transverse bars or transoms 35 are rigidly bolted tothe side beams 15, and thus serve to hold the. transverse end beams 36of the The transverse bars or transoms 35 also serve as a guide for,theswing-bolster 24, preventing it from moving in a direction longitudinalwith the ear. To the transverse bars or transoms 35 are also rivetedpockets 37,which receive the spiral springs 38, upon which rests thesupport 39 for the nose of the motor.

The four links 31L have normally aslight outward inclination, as shownin Fig. 4. The effect of this is to raise that side of the carbodytoward which the bolster 2; moves when the truck passes onto a curve,thus giving the efiect of an additional superelevation of the outsiderail of a curve.

The brake-rigging is fitted with flat brakebeams 40, equipped with thebrake-shoes 41.

The brake-shoes 41 are pivoted to links 42,

which are in turn pivoted to brackets 43, supported on the transverseend beams 36. To the inner sides of the brake-shoes at one end of thetruck there are pivoted at each side of the truck the upright levers M,and to the heads of these levers is secured the equalizer or floater 45.The floater 4:5 is provided with a segmental piece 46, on which the rod47 (leading to the sway-bar, secured to the bottom of the car at itslongitudinal center) works through a roller 48, journaled in thestrap49, embracing the floater and segmental piece 46, the said roller48 being so mounted with relation to the inner segmental curve of thepiece iii as to insure an even application of the brakes when the ear,mounted upon the pair of trucks, is rounding curves.

The means for obtaining increased traction or the two wheels supportingthe motor, known as the driving-wheels, will be seen in Figs. 5 to 13.In Figs. 5 and 6 the carbody-supporting springs 50 are of thehalfelliptic type and have their ends seated in pockets 51 on the sidebeams 15 of the truckframe and are connected to the center-bearingbolster 52,. upon which the car-body (inper cent.

Spiral springs may of in lieu of the half-ellipthe bolster on thedicated at 53) rests. course be employed tic springs for supportingtruck.

At one end of the truck-frame, preferably the inside end, its transversebeam 36is provided with the bracket 54, having an elongated portionserving as a guide for bolt 55, which is connected by a strap or frame56 to the half-elliptic spring 57. In the frame 56, centrally over thetop of the half -elliptic spring 57, is journaled the roller 5S,which isadapted to come in contaet'with a plate or bolster 58, attached to theunder side of the car-body.

The ends of the half-elliptic spring 57 seat iii-pockets 59, riveted tothe end beam 36. These pockets 59 may be made in various ways with aview of rendering them adj ust-' able, so that the height of the surfaceuponwhich the ends of the half -e1liptic springs seat may be increasedor decreased, as desired, to increase or decrease the tension upon thehalf-elliptic spring 57. In Figs. 8 and 9 the pockets 59 are adaptedtoreceive a series of plates 59, so grooved as to interlock with theinside surface of the pocket and also with one another, and thus preventtheir displacement. In Fig. 10 the shank of the pocket 59isprovid'edwith a series of holes to adapt it to be connected to the endbeam 36 at diiferent elevations.

In Figs. 11 to 13 the device is made in two parts, one part 59 beingriveted to end beam 30 and adapted to receive the shank of pocket 59 andbe secured in place by a bolt, as shown. The pocket 59 thus formed iseasily removable, and between it and the fixed part 59" there is placeda washer of indurated fiber 60, as shown. With a series of pockets 59 ofvarying heights the desired tension on spring 57 may be obtained byselecting a pocket of the requisite height. IVith these several forms ofpockets, which are-modifications of one another, the tension onthehalf-elliptic spring 57 may be varied, as desired, and thus thetract-ion on the truckwheels regulated.

It will be observed that the trae tion-regulating appliances are locatedoutside the wheels of the truck at the extreme end of the truck. By thisarrangement, in a truck equipped with a center-bearing bolster, weightis thrown on the end of the truck outside the wheels, which are betweenthe bearing of the bolster and the end of the truck-frame, thusrendering it possible, by suitable adjustment of the tension of thehalf-elliptic spring of the traction-regulating appliances, to put aboutseventy-five of the traction on said wheels and without interfering withthe freedom of action of the car-body. It will further be observed thatthe moter is suspended from the axle of that pair of wheels which isbetween the center-bearing bolster and that end of the truck upon whichthe traction-regulating appliances are secured. 'By this arrangement thegreatest amount of traction is ob- 1. In a car-truck, the combinationwith the of a car-body-supporting bolster,

side frames, I a spring-plank suspended by links below the bolster, ahalf-elliptic spring and a pair of .ing on said plank at or spiralsprings arranged and supporting the'bolster, the ends of saidhalf-elliptic spring bearing on the springplank toward its ends and atits middle sup: porting said bolster, and the spiral springs alsobearing on the spring-plank near its ends.

2. In a car-truck, the combination with the side frames, of acar-supporting bolster, a plank suspended below the bolster, spiralsprings and a half-elliptic spring between the plank and bolster, and ayielding bearing between the bolster and said half-elliptic spring. 3.In a car-truck, the combination with the side frames, of acar-body-supporting bolster, a-spring-plank and two pairs of linkswhereby said spring-plank is the bolster, and a series of springsallbearnear its ends, a part of said springs directly supporting thebolster at or near its ends, and the rest of said springs supporting thebolster at its center.

4. In a car-truck, the combination with the side frames, of acar-supporting bolster, a plank suspended below the bolster, spiralsprings between the plank and bolster, and

"a half-elliptic spring bearing on the vplank near its ends and againstthe bolster at its center, and apair of transverse bars or transoms oneon each side of the bolster and supported by the truck. v

5. In a car-truck, the combination'with the side frames, of acar-body-supporting bolster com posed of two channel-bars set on edgeand held together bybearing-plates at their ends and a suitable plate inthe middle, two transverse bars or transoms secured in pockets on theside frames of the truck, two pairs of links suspended from saidtransoms beyond the ends of the bolster, a spring-plank supported bysaid links beneath the bolster, and a series of springs arranged on saidspringplank and sustaining the bolster, one of said springs bearingonthe spring-plank near its ends and bearing against the bolster at itscenter.

(3. in a car-truck the combination, with the side frame, of a bolster,links depending from supports on the truck-frame and having a slightoutward inclination from the point of support, a plank supported by thelinks at their lower ends, and springs bearing on said "bolster by saidlinks,-

on the spring-plank suspended beneath top with a rolling ends of saidhalf-elliptiespring to rest in, and.

plank near its ends, one of said springs supporting the bolster at itscenter.

7 in a car-truck, the combination with the side frames and transversebars or transoms 35 seated in pockets on the side frames, of a car bodysupporting bolster arranged between said transoms, two pairs of linkscar-.

ried by said transoms beyond ends of the bolster, a spring-planksuspended below the a halt-elliptic spring the ends of which bear onsaid spring-plank near its ends, the center of the bolster resting onsaid spring and two spiral nest springs seated in pockets attached tothe bolster and the spring-plank near the ends of thelatter. 8. in acar-truck, the combination with the transverse end beam connecting theside frames together, of shalt-elliptic spring suitably mounted on saidend beam andprovided on its top with a rolling wheel or the like adaptedtocoact with the car-body sill against which said wheel pose set forth.I v

9. In a car-truck the combination with the transverse end beam of thetruck-frame, of a half-elliptic spring mounted on said end beam,adjustable pockets for the end of said half elliptic spring and means ontop of said spring adapted to coact with the car-body sill as set forth.

10. In a car-truck, the combination with the transverse endbeam of thetruck-frame, of a normally bears for the purhalf-elliptic springsuitably mounted on said end beam, adjustable pockets for the ends ofsaid half-elliptic spring, and a rolling wheel or the like journaled ontop of said spring and adapted to coact with the car-body sill for thepurpose setforth. r

11. In a car-truck, the combination with the end beam, of ahalf-elliptic spring adj ustably supported on said beam and provided onits wheel, and pockets for the removable portions adapted to fit saidpockets to vary the height or their seating-surfaces for the purpose setforth.

12. The combination with a cartruck equipped with a cen tor-bearingcar-body-sup= porting bolster, of a spring traction-regulat-= ingappliance located on the end of the truck outside the wheels, wherebyincreased traction is obtained on the wheels between the bolster andsaid end of the truck, 7

13. In a car-truck, the combination with a center-bearing bolster andthe driving-wheels, of a half-elliptic spring adj ustably'sn pported onthe end beam of the truck outside the driving-wheels and provided with arolling wheel on its top surface for the purpose set forth.

14. In a car-truck, the combination with a center-bearing bolster and atraction-regulatingappliance supported upon the end beam of the'tmck-frame, of a pair of wheels and their axle between said bolster andtraction: regulating appliance on said end beam, and a motor supportedon the axle of said wheels,

.15. in a ear-track, the combination with the.

are

driving-wheels and a. motor supported on the Signed at New York, in thecounty and State axle of said wheels, of a center-bearing b0? ofNewYork, this 2d day of August, 1897. sfier supported on the truck-frameand a he elliptic spring adj ustably supported on the EDGAR PECKHAM' 5end beam of the truck-frame, outside the Witnesses:

drivin -wheels, and provided with a rolling C. L. MALCOLM, Wheel at itstop, for the purpose set forth. G. H. BOWERS.

